Update trips

slices/admin/repos/trip_repo.rb

@@ -4,12 +4,20 @@ module Admin
       commands :create
 
       def list
-        trips.order(:start_date).to_a
+        trips
+          .order(:start_date)
+          .to_a
       end
 
       def fetch(id)
         trips.where(id: id).one
       end
+
+      def update(id, trip)
+        trips
+          .where(id: id)
+          .update(trip)
+      end
     end
   end
 end